PLUG AND PLAY: Our wireless keyboard and mouse are incredibly easy to use. Simply plug the USB dongle into your computer's USB port and install the batteries. This wireless keyboard and mouse are best used for connecting to all. There is ONLY ONE USB DONGLE to connect to the keyboard and mouse. The USB dongle is located in the battery compartment of the keyboard. HIGHLY COMPATIBLE: We recommend it for Apple iMac and Macbook, designed with macOS users in mind. Our wireless keyboard and mouse are also compatible with Windows computers or Android tablets and TV boxes. (See description for compatible iMac and Macbook models). WHAT'S DIFFERENT: We designed this keyboard and mouse based on your habits, quality requirements, and expected price point. It's ready to replace your current keyboard and mouse! (1) Special keys for macOS, also compatible with Windows and Android. (2) Super long lifespan for keyboard and mouse clicks. LONG BATTERY LIFE: Our wireless keyboard and mouse are designed for energy saving. The keyboard uses two AAA batteries, and the mouse uses one AA battery. They can last up to 6 months. (Batteries not included). IMPORTANT TIP: This keyboard and mouse use automatic power-saving technology, which may turn them off after 30 seconds of inactivity. There is no power switch to turn them on/off manually. Simply press any key to wake them up. This is NOT a delayed response; it's a power-saving feature.